Cigarette-making machine



Jan.

E. KOERNER CIGARETTE MAKING MACHINE Filed Jn. 24 1925 possible to maintain the pulley centers Patented Jan. 18, 1927.

UNITED STATES PATENT OFFICE.

EWALD KOERNER, OF DRESDEN, GERMANY.

CIGARETTE-MAKING MACHINE.

Application filed January 24, 1925, Serial No. 4,366, and in Germany February 21, 1924.

This invention relates to a cigarettemaking-machine of the kind having a revolving cutter Whose position is controlled by parallel cranks so that, while it rotates about its axis, it is also subjected to al parallel, circular motion in the plane of the cutter shaft.

In these machines, it is usual to impart a rotary motion to the cutter by means of a belt or worm gearing. The belt gea-ring has the disadvantage that it does not impart a perfectly uniform motion to the cutter. This is mainly due to the fact that, owing to the translatory motion of the cutter, it is hardly at a uniform distance from one another. The worm gearing, on the other hand, requires considerable power and must be mounted in an oil bearing. Owing to the high speed of the cutter itis hardly possible to prevent the oil from leaking through and from soiling the cigarettes.

The object of the present invention is to provide a more satisfactory gearing for the cutter, and the invention consists in the provision of a toothed gearing which participates in the translatory motion of the cutter shaft and which derives its rotary motion from the translatory motion of the gearing about a stationary controlling element. Preferably two bevel gears are employed one of which is connected to the cutter shaft and the other to a separate shaft which, while following the translatory motion of the cutter shaft, is controlled by a crank held in a stationary bearing. y

Fig. 1 of the accompanying drawings represents a side view of the mechanism, and

Fig. 2, a partial plan of the same.

The cutter 4 is secured to a shaft 3 which is rotatably held in a frame 1. The latter is controlled by two parallel cranks 2 which impart to it and to the cutter shaft a parallel circular motion. This enables the cuttei', while rotating against the cigarette rod for cutting the latter, to participate in the uniform, axial feeding motion of the rod.

According to the invention the frame 1 is furnished with a bearing 8 in which a shaft 7 is held at right angles to the cutter shaft. A bevel gear 6 keyed to the shaft 7 meshes with a similar gear 5 keyed to the cutter shaft 3. The shaft 7 also has keyed to it an arm 9 which is axially slidable in the pin 14 of a crank 10, the shaft 11 of the latter being held in a bearing 12 carried by a stationary bracket 13. The shaft 11 is arranged so as to be substantially coaxial with the translatory motion imparted to the shaft 7. The arm 9 therefore forms a crank through the medium of which the shaft 11 will be rotated by the bearing 8. At the same time the shaft 7 will be kept in rotation for driving the cutter 4. The slidable arrangement of the arm 9 in the pin 14 has the advantage of ensuring full freedom of movement even if the distance between the centers of the shafts 7 and 11 should vary, such variation being sometimes necessary in order to render the displacement of the cutter during the cutting operation conform with that of the cigarette rod.

I claim:

1. In a cigarette-making machine of the character described, a cutter frame, a cutter shaft mounted rotatably in said frame, means for imparting a parallel circular motion to said frame at right angles to the plane of rotation of the shaft, a driving shaft carried by said frame at right angles to the cutter shaft, intermeshing bevel gears connected to the two shafts, a gear controlling shaft carried by a stationary support in the center of the circular displacement of the driving shaft, and an arm connecting the driving shaft with the gear controlling shaft so that the driving shaft will be r0- tated by virtue of the circular displacement of the cutter frame.

Q. In a cigarette-making machine of the character described, a. cutter frame, a cutter shaft mounted rotatably in said frame, means for imparting a parallel, substantially circular motion to said frame at right angles to the plane of rotation of the shaft, a driving shaft carried by said frame at right angles to the cutter shaft, intermeshing bevel gears connected to the two shafts, a gear controlling shaft held substantially in the center of the circular displacement of the driving shaft, a crank secured to said gear controlling shaft, and an arm secured to the driving shaft and controlled by the crank so as to impart rotation to the driving shaft by virtue of the circular displacement of the latter, the arm being in sliding engagement with the crank to allow for possible eccentricity of the two shafts.

EWALD KOERNER. 

